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RF4158

Fractional-N Frequency Synthesizer

  • Overview
  • Documentation and Technical Information
  • Tools and Evaluation Boards
  • Use Case
Overview
Part Number         DescriptionRF Bandwidth HzPFD(max)HzFOM-Normalized inband PN Int-n(typ)(Dbc/Hz)Voltage VOperature Temperature ℃ PackageApplication
RF4158Fractional-N Frequency Synthesizer    800M~8G  100MHz-203.9dBc/Hz  2.7~ 3.45-40~125QFN 24PINFMCW Radar


RF4158

The RF4158 is a 8.0 GHz, fractional-N frequency synthesizer with modulation and waveform generation capability.  It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a sigma-delta (Σ-Δ) based fractional interpolator to allow programmable fractional-N division. 

The RF4158 can be used to implement frequency shift keying (FSK) and phase shift keying (PSK) modulation.

Control of all on-chip registers is via a simple 3-wire interface. The device operates with a power supply ranging from 2.7 V to 3.3 V and can be powered down when not in use.



Application

FMCW Radar

Documentation and Technical Information
Download Specification
Tools and Evaluation Boards

Features and Benefits


RF bandwidth up to 8.0 GHz

Power-down mode

implement frequency shift keying (FSK) and phase shift keying (PSK) modulation.

Ramp with 2 different sweep rates

2.7 V to 3.3 V power supply

Programmable charge pump currents

3-wire serial interface

Switched bandwidth fast-lock mode

ESD performance: 2KV HBM、1KV CDM





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Use Case

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